I don't care if it's DOS or D&D or something entirely different. Shoving is simply, objectively, far too prevalent and powerful for BG3 tactical combat to be credible. Someone just can't get enough of the joke. Swen himself seemed to have a great time thunderwaving his co-op buddy over the edge. It seems like memes over gameplay any day at Larian.
I get how players not looking for a tactical challenge would find OP stuff fun. But some of us do play for that challenge and I don't want it to be a lazy afterthought of giving enemies double HP and shove immunity.
Finally, BG3 has so much verticality everywhere the natural instinct would be to nerf Shove from 5e. Instead, they greatly overpowered it. (And where you have no verticality, you have explosives lying around, or some gimmick that can entirely dominate a fight. Always something that makes character abilities secondary.)